Shutter-bower



(No Model.) v

A. G. OHRISTMAN. SHUTTER BOWER.

No. 527,047. Patented Oct. 9, 1894.

2 '8 '""*'-'"""g "wz 2 UNITED STATES PATENT v OFFICE.

AUGUSTUS G. CHRISTMAN, OF READING, PENNSYLVANIA.

SHUTTER-BOWER.

SPECIFICATION forming part of Letters Patent No. 527,047, dated October9, 1894.

Application filed April '7, 1394.

To all whom it may concern.-

Be it known that I, AUGUSTUS G. CHRIST- MAN, a citizen of the UnitedStates, residing at Reading, county of Berks, State of Pennsylvania,have invented certain Improvements in Shutter-Bowers, of which thefollowing is a specification.

The object of my invention is to provide an improved device for lockingand bowing shutters which will be simple and cheap in construction andeasy and satisfactory in operation.

The invention is described in connection with the accompanying drawingsand is specifically pointed out in the claims.

Figure 1 is an elevation showing my device applied to a pair ofshutters, the latter being represented as closed and locked. Fig. 2 is apartly sectional view on line x m Fig. 1. Fig. 3 is a top viewrepresenting the shutters as bowed. Fig. 4: is an edge view of theshutter Ashowing the keeper plate in full and the bolt in cross-section.Fig. 5 is a view of the separately formed plate D of the bolt casing.

A, A represent hinged shutters to the adjoining edges of which my deviceis attached.

B, B is the keeper plate or box which is fixed to one shutter andadapted to receive the sliding bolt 0 which is guided as usual in acasing D fixed to the other shutter.

The bolt 0 is provided with a pivot hole 0 at its outer end and with aseries of notches c in its upper edge extending from its opposite end.It is also formed witha finger piece 0 which serves as a stop by comingin contact with the cross-bars d and d of the casing, which bars serveto hold the bolt in place. The casing plate is open at the rear topermit the bolt 0 to be entered back of the crossbars 61 and d, theopening being made at least as long as the bolt measures from the fingerpiece a to its inner end, and a separate plate D being provided to closea portion of this opening after the bolt is inplace as indicated. Thebolt is mounted in the casing D before the latter is secured to theshutter by first passing the apertured end through the'opening in therear plate of the casing, under the cross-bar or keeper at until thefinger piece'or stud c engages said crossbar as shown in Fig. 1 when theopposite end of the bolt may be moved outward against SerialNo. 506,683-(No model.)

the cross-bar or keeper (1 and the removable plate D secured in placeback of it. This construction enables me to cast the finger pieceintegral with the bolt while at the same time providing a metal backingfor it at all times. The box B is provided with a pivot pin 1) whichprojects toward the other shutter and the point of which is turnedinward, sufi'icient space being left between itand the box plate topermit the passage of the bolt 0. The bolt as shown is groovedlongitudinally on its inner face thus allowing the point of the pivotpin to reach nearer to the face of the shutter without interfering withthe movement of the bolt.

Pivoted' to the face of the casing plate D is a lock arm F the point fof which is arranged to drop down into engagement with one or other ofthe notches c. A somewhat similar movable piece E is pivoted at e to thebox or keeper plate B, the end ,6 of which is arranged to swing downbetween the point of the pivot pin b and the keeper plate so as to toprevent the passage of the bolt 0.

In operating my device to lock the shutters when closed the hingedpieces E and F are thrown back out of engagement with the bolt until thelatter is moved outward into the box B as shown in Figs. 1 and 2 whenthe lockF may be dropped into one of the notches c to secure it. of thebolt is withdrawn from the box B, the end of the pivot pin b is enteredin the pivot hole 0 and the. movable piece E is thrown the box platethus preventing the disengagement of the bolt from the pivot pin. Theshutters may now be opened to any desired angle as indicated in Fig. 3,and so held by merely dropping the lock arm f into one of the notches c.

Having thus clearlydescrlbed my invention I do not limit myself to theexact construction shown, but 7 What I claim is v 1. The combinationwith the sliding bolt having a pivot hole at the outer end thereof, of akeeper or box fixed to the opposite shutter and provided with a pivotpin b and a movable piece adapted to swing into the path of the bolt andto move the end thereof into reduce the space between them sufficientlyTo bow the shutters the outer end down between the rear face of the boltand ,i

engagement with the pivot pin,'thebolt being free to ride past the pinwhen said movable piece is moved from its path, substantially as setforth.

2. The combination with the sliding bolt having a pivot hole at theouter end" thereof and a series of adjustment notches near the oppositeend, of a keeper or box fixed tothe opposite shutter and provided with apivot pin 61, a movable piece adapted to swing into the pathof the boltand tomove the end thereof outward into engagement with the pivot pinand a look to engage one or other of said notches, substantially as setforth.

3. The combination with the sliding bolt having a projecting fingerpiece a? formed integral therewith, of a casing therefor, havlng raisedcross-bars d and d, and an opening in the back large enough to admit thebolt to the rear of said cross-bars, and a separate plate D arranged tofill a portion of said opening after the bolt is entered substantiallyas set forth.

In testimony whereof I afiix my signature in presence of two Witnesses.

AUGUSTUS G. CI-IRISTMAN.

Witnesses:

CAMERON E. STRAUSS, W. G. STEWART.

